Window replacement cost in Ireland
Replacing all windows in a 3-bed semi-detached house (8 to 10 windows) in Ireland costs €4,500 to €7,800 in smooth white A-rated uPVC, €5,400 to €9,200 in dual-colour foiled uPVC, or €10,500 to €16,800 in triple-glazed aluclad. A 4-bed detached house (12 to 16 windows) costs €6,800 to €11,900 in uPVC or €14,500 to €24,000 in aluclad.
Complete supply-and-fit price breakdown by house type, frame profile, glazing and SEAI grant rules.
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Pick your approximate house size, your preferred frame material (smooth white uPVC, colour-foiled uPVC or aluclad), and double vs triple glazing.
Estimated guide price (incl. VAT)
€5,150 to €8,900
3-bed semi-detached (8–10 windows) · Smooth white uPVC · Triple glazing (0.8 W/m²K)
Guide price for a 3-bed semi-detached (8–10 windows) in smooth white upvc with triple glazing (0.8 w/m²k), including removal of old frames, low-expansion foam sealing, internal reveal plastering and 13.5% VAT. If completed as part of a qualifying SEAI whole-house upgrade, the SEAI grant for this home size is €3,500.
Ask a local installer for a quoteFull-house window replacement prices by property size
| Property type & window count | Smooth white uPVC (double/triple) | Dual-colour foiled / flush uPVC | Triple-glazed aluclad / aluminium | SEAI Windows Grant (qualifying upgrades) |
|---|---|---|---|---|
| 2–3 bed terraced / apartment (5–7 windows) | €3,200 to €5,400 | €3,800 to €6,400 | €7,200 to €11,500 | €1,500 (apt) / €3,000 (terrace) |
| 3-bed semi-detached house (8–10 windows) | €4,500 to €7,800 | €5,400 to €9,200 | €10,500 to €16,800 | €3,500 (+ €800 per door) |
| 4-bed detached / bungalow (12–16 windows) | €6,800 to €11,900 | €8,000 to €14,200 | €14,500 to €24,000 | €4,000 (+ €800 per door) |
| Large 5-bed detached (18–22 windows) | €9,500 to €15,800 | €11,200 to €18,900 | €20,500 to €34,000 | €4,000 (+ €800 per door) |
Individual window and door supply-and-fit rates
When pricing a schedule opening by opening, installers calculate each unit by square metre, opening sash count and glass specification:
| Window or door unit (installed, incl. VAT) | uPVC guide price | Aluclad / aluminium guide price | Notes |
|---|---|---|---|
| Single casement window (up to 1.2m × 1.2m) | €420 to €780 | €780 to €1,450 | Includes Part B egress hinge on bedrooms |
| Wide living-room combo window (1.8m–2.4m wide) | €750 to €1,350 | €1,450 to €2,600 | Fixed centre picture pane + side opening lights |
| Bay or bow window (3 to 5 facets) | €1,850 to €3,400 | €3,400 to €5,800 | Includes structural bay jack poles & insulated cill |
| Sliding sash window (per window) | €950 to €1,750 | €1,550 to €2,650 (timber/aluclad) | Spring-balanced with tilt-in cleaning latches |
| Composite front door + sidelight | €1,850 to €3,200 | €2,900 to €4,800 (alu/aluclad) | PAS 24 multi-point hook lock, triple glazed |
Real examples and installation detail
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Window replacement guides & price breakdowns
Straight answers to what people ask most: itemised costs, specifications, planning or grants, and what to check before you book.
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Questions homeowners ask
Is VAT at 13.5% or 23% on replacement windows in Ireland?
Under Irish Revenue's two-thirds rule, full supply-and-fit window and door replacement by a registered contractor is taxed at the reduced 13.5% construction VAT rate (whereas buying windows supply-only is 23% VAT). All prices in our guide include 13.5% VAT.
How much deposit is normal when ordering replacement windows?
Standard practice across reputable Irish window companies is a 25% to 35% deposit after the technical laser survey to put your custom frames into factory production, with the balance paid on completion of fitting.
Window replacement across all 26 counties
Requests from all 26 counties go to one vetted local specialist who covers your county — from Dublin, Cork, Galway and Limerick to Kildare, Meath, Wicklow, Waterford and Donegal. Pick your county below for local prices, specifications and advice. Compare all areas covered →
Want a measured written price for your windows?
One vetted installer covering your county visits to laser-measure every opening, show you frame and handle samples, and give you a fixed written quote.